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參數(shù)資料
| 型號： | M34506M4-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, MICROCONTROLLER, PDSO20 |
| 封裝： | 5.30 X 12.60 MM, 1.27 MM PITCH, PLASTIC, SOP-20 |
| 文件頁數(shù)： | 20/114頁 |
| 文件大?。?/td> | 937K |
| 代理商： | M34506M4-XXXFP |
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Rev.2.00
Aug 28, 2006
page 114 of 119
7643 Group
REJ03B0054-0200
USB
When the USB Reset Interrupt Status Flag is kept at “1”, all other
flags in the USB internal registers (addresses 005016 to 005F16)
will return to their reset status. However, the following registers
are not affected by the USB reset: USB control register (address
001316), Frequency synthesizer control register (address
006C16), Clock control register (address 001F16), and USB end-
point-x FIFO register (addresses 006016 to 006216).
When not using the USB function, set the USB Line Driver Supply
Enable Bit of the USB control register (address 001316) to “1” for
power supply to the internal circuits (at Vcc = 5V).
The IN_PKT_RDY Bit can be set by software even when using
the AUTO_SET function.
When writing to USB-related registers, set the USB Clock Enable
Bit to “1”, then perform the write after four
φ cycle waits.
The receive buffer full interrupt request is not generated if receive
errors are detected at receiving.
If a character bit length is 7 bits, bit 7 of the UART transmit/re-
ceive buffer register 1 and bits 0 to 7 of the UART transmit/
receive buffer register 2 are ignored at transmitting; they are in-
valid at receiving.
If a character bit length is 8 bits, bits 0 to 7 of the UART transmit/
receive buffer register 2 are ignored at transmitting; they are in-
valid at receiving.
If a character bit length is 9 bits, bits 1 to 7 of the UART transmit/
receive buffer register 2 are ignored at transmitting; they are “0”
at receiving.
When using the MCU at Vcc = 3.3V, set the USB Line Driver Sup-
ply Enable Bit to “0” (line driver disable). Note that setting the
USB Line Driver Current Control Bit (USBC3) doesn’t affect the
USB operation.
Read one packet data from the OUT FIFO before clearing the
OUT_PKT_RDY Flag. If the OUT_PKT_RDY Flag is cleared
while one packet data is being read, the internal read pointer can-
not operate normally.
Use the transfer instructions such as LDA and STA to set the reg-
isters: USB interrupt status registers 1, 2 (addresses 005216,
005316); USB endpoint 0 IN control register (address 005916);
USB endpoint x IN control register (address 005916); USB end-
point x OUT control register (address 005A16). Do not use the
read-modify-write instructions such as the SEB or the CLB in-
struction.
When writing to bits shown by Table 27 using the transfer instruc-
tion such as LDA or STA, a value which never affect its bit state
is required. Take the following sequence to change these bits
contents:
(1) Store the register contents onto a variable or a data register.
(2) Change the target bit on the variable or the data register. Si-
multaneously mask the bit so that its bit state cannot be
changed. (See to Table 27.)
(3) Write the value from the variable or the data register to the
register using the transfer instruction such as LDA or STA.
To use the AUTO_SET function for an IN transfer when the
AUTO_SET bit is set to 1, set the FIFO to single buffer mode.
Table 27 Bits of which state might be changed owing to software write
Register name
USB endpoint 0 IN control register
USB endpoint x (x = 1, 2) IN control register
USB endpoint x (x = 1, 2) OUT control register
Bit name
IN_PKT_RDY (b1)
DATA_END (b3)
FORCE_STALL (b4)
IN_PKT_RDY (b0)
OUT_PKT_RDY (b0)
FORCE_STALL (b4)
Value not affecting state (Note)
“0”
“1”
“0”
“1”
Note: Writing this value will not change the bit state, because this value cannot be written to the bit by software.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M34506E4FP | 4-BIT, OTPROM, MICROCONTROLLER, PDSO20 |
| M34508G4HFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| M34508G4GP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| M34508G4H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| M34508G4-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34507E4FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34507M2-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES |
| M34507M4-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34508G4FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34508G4GP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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